CN102251104B - Leaching method of low-grade copper oxide mud ore - Google Patents
Leaching method of low-grade copper oxide mud ore Download PDFInfo
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- CN102251104B CN102251104B CN2011101913136A CN201110191313A CN102251104B CN 102251104 B CN102251104 B CN 102251104B CN 2011101913136 A CN2011101913136 A CN 2011101913136A CN 201110191313 A CN201110191313 A CN 201110191313A CN 102251104 B CN102251104 B CN 102251104B
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Abstract
The invention provides a leaching method of low-grade copper oxide mud ore, which comprises the following process steps: concentration, leaching, washing, settling separation, dilution, clarification separating, and the like. Therefore, the leaching of low-grade refractory copper oxide ore with high mud content is realized; reliable raw material guarantee is provided for subsequent extraction of valuable elements; not only resources are integrated and valuable elements in resources are fully recovered, but also the invention has a high leaching rate, a short leaching period, and less tailing entrainment; the overflow is returned for recycle during the leaching process; the leached solid residues are neutralized with tailing slurry discharged by concentrators, and then are stored in tailing reservoirs, so no pollutant is discharged outwards, which facilitates environmental protection; additionally, the invention also has the advantages of investment saving, low operation cost, low labor intensity, and high productivity.
Description
Technical field
The present invention relates to a kind of leaching method of low-grade copper oxide mud ore, belong to technical field of wet metallurgy.
Background technology
The valuable element that agitation leach contains in the mud ore deposit is a very ripe Technology, and because its leaching yield is high, technical process is short, and is widely used in the hydrometallurgy industry.Traditional soaking technology that stirs has following two kinds: the one, adopt normal temperature to stir to soak, press filtration, and this technique is not only invested greatly, equipment energy consumption is high, and labour intensity is large, solid-liquid separation effect is poor, finally cause production cost high, thus be only suitable for processing high grade ore, otherwise be difficult to make a profit; The 2nd, adopt normal temperature to stir to soak, natural supernatant, the deficiency that this technique exists is that production efficiency is low, and valuable element is carried secretly seriously, and resources loss is larger, and manually deslagging intensity is very high, is not suitable for mass-producing, suitability for industrialized production.Therefore, tradition is stirred soaking technology and is failed to be applied on a large scale in the hydrometallurgy industry always, especially aspect processing low grade copper oxide ore mud, does not also have the example of successful Application.Enlightening celebrating copper oxide mud ore is that a kind of low-grade, height contains mud, and the high raw ore of foreign matter content such as Ca, Mg and Fe, it effectively can't be utilized by single heap leaching method of the prior art, mud ore deposit separate treatment could must be realized normally production.And with of the prior art single when stirring soaking technology and processing this mud ore deposit, can't obtain and to allow the economic interests of Business survival.Therefore, with regard to current condition, a large amount of copper oxide mud ores utilizes by on one side idle because being difficult to exploit on the one hand, can not meet the need of market because of the in short supply of valuable metal element again on the other hand.Therefore, must be improved prior art, with the valuable metal element in the abundant recovery low-grade copper oxide mud ore, be met the need of market.
Summary of the invention
, height low-grade for fully recycling contains the valuable element in the high enlightening celebrating copper oxide mud ore of the foreign matter contents such as mud and Ca, Mg and Fe, the invention provides a kind of leaching method of low-grade copper oxide mud ore, the method cost is low, technique is simple, the rate of recovery is high, and can use in the high altitude localities.
The present invention is to provide a kind of like this leaching method of low-grade copper oxide mud ore, it is characterized in that through following process steps:
A, with the fine fraction ore pulp that conventional washup operation produces, carry out routinely thickening to the underflow mass concentration more than 50%, underflow is flowed automatically in the agitation vat, overflow is returned the washup operation and is recycled;
B, in A step gained underflow, adding raffinate to underflow mass concentration is 30～45%, by the amount of 100～150g/l underflow, adds sulfuric acid in underflow again, is under 60～80 ℃ of conditions at slurry temperature, agitation leach 1～1.2 hour gets the leaching ore pulp;
C, in B step gained leaches ore pulp, add entry or raffinate agitator treating after leach the ore pulp mass concentration and be 15～20%, be settled down to and isolate solid and liquid, isolate again supernatant liquor and clarification underflow after the liquid clarification, wherein supernatant liquor send extraction process to extract valuable element;
D, add raffinate and water in C step gained settle solids, agitation and dilution settle solids to mass concentration is 15～20%, further is settled down to isolate solid and liquid, and liquid returns the C step cycle and uses;
E, D step gained settle solids and C step gained clarification underflow mixed after, amount by 0.020～0.030g/l mixed solution, in mixed solution, add polyacrylamide, further clarification is to isolating solid and liquid, liquid returns the C step cycle and uses, after the Tailings Slurry that solid and beneficiating process are discharged mixes, together send into Tailings Dam and deposit.
The raffinate of described B, C, D step is: extraction process has extracted the residual solution behind the valuable element.
The slurry temperature of described B step can pass into the waste hot steam of vitriol works to be regulated and control, to satisfy the requirement of the agitation leach of heating.
After the A step process: ⑴ improves pulp density, stirs with increasing and soaks production capacity; ⑵ overflow is returned the washup operation and is recycled, and can reduce production costs; ⑶ effectively control water by thickening and expand..
Through after the B step process: ⑴ can take full advantage of the waste hot steam of local vitriol works and heat, and realizes the low cost leaching of heating; ⑵ because utilizing high temperature, high Ore Leaching, Effective Raise leaching yield; ⑶ utilize high temperature, high Ore Leaching, shortens leaching cycle, and Effective Raise stirs and soaks production capacity.
Processing through C, D step: ⑴ effectively reduces the solid-liquid separation operation easier, has realized stirring the soaking technology low cost production; ⑵ allow with the mode of natural subsidence and stir soaking technology and produce qualified feed liquid, both reduced reagent cost, avoided again medicament residual too much and the pollution that follow-up extraction process is caused.
Processing through the E step: ⑴ can under the effect of this flocculant in non-ion type enhance clarification of polyacrylamide, reduce the entrainment loss of liquid copper; ⑵ the reasonable control of chemical feeding quantity has significantly improved solid-liquid separation effect; ⑶ mixing of the alkaline Tailings Slurry that the acid underflow that contain solid and beneficiating process are discharged, can in flowing to the way of Tailings Dam, fully be finished neutralization, saved artificial in and link and equipment, effectively reduce investment and production cost.
The equipment that technique of the present invention is used is conventional equipment, the device height that is last operation will be higher than the afterwards device height of an operation, the discharge port of last processing apparatus links to each other by pipeline with the opening for feed of a rear processing apparatus simultaneously, to finish self-feeding by the discrepancy in elevation, both energy-saving and cost-reducing, alleviate again labor strength.
The present invention has following advantages and positively effect: adopt such scheme, can be at high height above sea level, high cold district, realize that low-grade height contains mud and difficult leaching of soaking copper oxide ore, for the extraction of the valuable element of postorder provides reliable raw material guarantee, not only integrated resource, fully reclaim the valuable element in the resource, and leaching yield is high, leaching cycle is short, it is few that mine tailing is carried copper secretly, and the simultaneously overflow in the leaching process is returned and recycled, and deposits with the rear Tailings Dam that just enters in the Tailings Slurry that discharge in the solid recrement after in addition leaching and dressing-works, therefore, outwards do not discharge any pollutent, be conducive to environmental protection, have in addition reduced investment, running cost is low, labour intensity is low, the advantage that production capacity is high.
Description of drawings
Fig. 1 is the present invention's process flow sheet.
Embodiment
The present invention will be further described below in conjunction with accompanying drawing.
Embodiment 1
The main chemical compositions of the handled low-grade copper oxide mud ore of the present embodiment is: free cupric oxide 0.356%, and in conjunction with cupric oxide 0.436%, secondary copper sulfide 0.072%, chalcopyrite 0.429%, Al
2O
34.44%, SiO2 38.12%, Fe17.64%, CaO10.77%, MgO0.81%.
The process following process steps:
A, the above-mentioned fine fraction ore pulp that conventional washup operation is produced are sent in the thickening pond, carry out routinely thickening to the underflow mass concentration 50%, overflow is returned the washup operation and is recycled, underflow flows in the agitation vat automatically;
B, in the agitation vat that underflow is housed of A step, adding raffinate to underflow mass concentration is 40%, press again the amount of 150g/l underflow, in underflow, add sulfuric acid, and pass into from the waste hot steam of vitriol works heating slurry temperature to 60 ℃, agitation leach 1.2 hours, the leach liquor gravity flow enters the one-level solid-liquid separating equipment;
C, in B step gained leach liquor, add entry and raffinate and carry out the dense washing of one-level, after making the leach liquor mass concentration be 20%, be settled down to and isolate solid and liquid, the solid underflow flows automatically in the secondary solid-liquid separating equipment, and liquid self-flowing after the clarification, is isolated supernatant liquor and solid underflow in the settling pond, wherein the solid underflow flows automatically to and carries secretly in the liquid pond for recovering, and supernatant liquor send extraction process to extract valuable element;
D, in the solid-liquid separating equipment that the settle solids underflow is housed of C step, add raffinate and water, agitation and dilution settle solids underflow to mass concentration is 15%, further is settled down to isolate solid and liquid, the solid underflow flows automatically to be carried secretly in the liquid pond for recovering, and liquid returns the C step cycle and uses;
E, carrying secretly in the liquid pond for recovering at the solid underflow that C, D step are housed, press the amount of 0.020g/l liquid, add the polyacrylamide flocculant in non-ion type, further clarification is to isolating solid and liquid, liquid returns the C step cycle and uses, after the Tailings Slurry that solid and beneficiating process are discharged mixes, together send into Tailings Dam and deposit.
Embodiment 2
The main chemical compositions of the handled low-grade copper oxide mud ore of the present embodiment is: free cupric oxide 0.356%, and in conjunction with cupric oxide 0.435%, secondary copper sulfide 0.071%, chalcopyrite 0.43%, Al
2O
34.45%, SiO2 38.11%, Fe17.62%, CaO10.75%, MgO0.82%.
The process following process steps:
A, the above-mentioned fine fraction ore pulp that conventional washup operation is produced are sent in the thickening pond, carry out routinely thickening to the underflow mass concentration 50%, overflow is returned the washup operation and is recycled, underflow flows in the agitation vat automatically;
B, in the agitation vat that underflow is housed of A step, adding raffinate to underflow mass concentration is 30%, press again the amount of 100g/l underflow, in underflow, add sulfuric acid, and pass into from the waste hot steam of vitriol works heating slurry temperature to 80 ℃, agitation leach 1 hour, the leach liquor gravity flow enters the one-level solid-liquid separating equipment;
C, in B step gained leach liquor, add entry and raffinate and carry out the dense washing of one-level, after making the leach liquor mass concentration be 15%, be settled down to and isolate solid and liquid, the solid underflow flows automatically in the secondary solid-liquid separating equipment, and liquid self-flowing after the clarification, is isolated supernatant liquor and solid underflow in the settling pond, wherein the solid underflow flows automatically to and carries secretly in the liquid pond for recovering, and supernatant liquor send extraction process to extract valuable element;
D, in the solid-liquid separating equipment that the settle solids underflow is housed of C step, add raffinate and water, agitation and dilution settle solids underflow to mass concentration is 20%, further is settled down to isolate solid and liquid, the solid underflow flows automatically to be carried secretly in the liquid pond for recovering, and liquid returns the C step cycle and uses;
E, carrying secretly in the liquid pond for recovering at the solid underflow that C, D step are housed, press the amount of 0.030g/l liquid, add the polyacrylamide flocculant in non-ion type, further clarification is to isolating solid and liquid, liquid returns the C step cycle and uses, after the Tailings Slurry that solid and beneficiating process are discharged mixes, together send into Tailings Dam and deposit.
Claims (2)
1. the leaching method of a low-grade copper oxide mud ore is characterized in that through following process steps:
A, with the fine fraction ore pulp that conventional washup operation produces, carry out routinely thickening to the underflow mass concentration more than 50%, underflow is flowed automatically in the agitation vat, overflow is returned the washup operation and is recycled;
B, in A step gained underflow, adding raffinate to underflow mass concentration is 30～45%, by the amount of 100～150g/L underflow, adds sulfuric acid in underflow again, is under 60～80 ℃ of conditions at slurry temperature, agitation leach 1～1.2 hour gets the leaching ore pulp;
C, in B step gained leaches ore pulp, add entry or raffinate agitator treating after leach the ore pulp mass concentration and be 15～20%, be settled down to and isolate solid and liquid, isolate again supernatant liquor and clarification underflow after the liquid clarification, wherein supernatant liquor send extraction process to extract valuable element;
D, add raffinate and water in C step gained settle solids, agitation and dilution settle solids to mass concentration is 15～20%, further is settled down to isolate solid and liquid, and liquid returns the C step cycle and uses;
E, D step gained settle solids and C step gained clarification underflow mixed after, amount by 0.020～0.030g/L mixed solution, in mixed solution, add polyacrylamide, further clarification is to isolating solid and liquid, liquid returns the C step cycle and uses, after the Tailings Slurry that solid and beneficiating process are discharged mixes, together send into Tailings Dam and deposit.
2. the leaching method of low-grade copper oxide mud ore as claimed in claim 1, it is characterized in that the raffinate of described B, C, D step is: extraction process has extracted the residual solution behind the valuable element.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011101913136A CN102251104B (en) | 2011-07-08 | 2011-07-08 | Leaching method of low-grade copper oxide mud ore |
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| CN2011101913136A CN102251104B (en) | 2011-07-08 | 2011-07-08 | Leaching method of low-grade copper oxide mud ore |
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| CN103184333B (en) * | 2011-12-30 | 2014-08-06 | 北京有色金属研究总院 | High grade copper oxide-containing material sulfuric acid leaching and stage extraction technology |
| CN103374655B (en) * | 2012-04-24 | 2016-01-06 | 中国瑞林工程技术有限公司 | Wet method copper-extracting process |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457299A (en) * | 2007-12-10 | 2009-06-17 | 北京有色金属研究总院 | Wet processing process of high mud cupric oxide mine at high-cold area |
| CN101724749A (en) * | 2009-12-18 | 2010-06-09 | 云南迪庆矿业开发有限责任公司 | Method for comprehensively treating copper oxide ore with high contents of mud, iron, calcium and magnesium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101457299A (en) * | 2007-12-10 | 2009-06-17 | 北京有色金属研究总院 | Wet processing process of high mud cupric oxide mine at high-cold area |
| CN101724749A (en) * | 2009-12-18 | 2010-06-09 | 云南迪庆矿业开发有限责任公司 | Method for comprehensively treating copper oxide ore with high contents of mud, iron, calcium and magnesium |
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